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Artifact Details

Title

Napier's bones abacus cards

Catalog Number

102652472

Type

Still Image

Dimensions

11 1/4 x 9 1/2 in.

Format

Photographic print

Description

This is a black and white image of a set of white Napier's bones against a black background. There are 10 cards laid out horizontally with numbers when read from top to bottom is "0 1 2 3 4 5 6 7 8 9". Each strip has 10 triangles cut into it along with 10 diagonal black lines evenly spaced. The triangle notches are at the top while others are in the middle or at the bottom of the strip. Written on the verso side in blue pen is "3846/7" and in black pen "10/1, p.63". Also written in verso side in pencil is "E.Tomash Figure 13". There was a "17" written but has been crossed off. Written on on the white label is "PROPERTY OF ANNALS OF THE HISTORY OF COMPUTING 133 McBryde Hall Virginia Tech Blacksburg, VA 24061-0119".